ML071550400

Evaluation Reactor Vessel Head Inspection Data for Control Element Drive Mechanism (CEDM) # 56.

ML071550400
Person / Time
Site:	San Onofre
Issue date:	06/01/2007
From:	Scherer A Southern California Edison Co
To:	Document Control Desk, NRC/NRR/ADRO
References
Download: ML071550400 (2)

Text

A. Edward Scherer EDISONISON SOUTHERN CALIFORNIA Manager of Nuclear Regulatory Affairs An EDISON INTERNATIONAL Company June 1, 2007 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Docket No. 50-362 Evaluation Reactor Vessel Head Inspection Data for Control Element Drive Mechanism (CEDM) # 56 San Onofre Nuclear Generating Station Unit 3

Reference:

Letter from A. E. Scherer (SCE) to the U. S. Nuclear Regulatory, Commission (Document Control Desk) dated November 20, 2006;

Subject:

Docket No. 50-362, Additional Information Supporting Third Ten-Year Inservice Inspection (ISI) Interval Relief Request ISI-3-21 Request for Alternative to ASME Code Rules for the Embedded Flaw Repair Process for Control Element Drive Mechanism (CEDM) # 56, San Onofre Nuclear Generating Station Unit 3

Dear Sir or Madam,

Southern California Edison (SCE) made a commitment in the referenced letter to complete the formal evaluation inspection data for the control rod drive mechanism CEDM # 56 and provide a copy of that report to the U. S. Nuclear Regulatory Commission (NRC) staff in the spring of 2007.

SCE continues to believe that the indication identified in CEDM # 56 is not a defect and has found nothing in the evaluation process to date, to contradict that belief. Additional review by SCE and the review by an independent expert, however, remain to be performed before the evaluation is complete.

SCE currently plans to complete the formal evaluation process and submit the evaluation to the NRC by August 31, 2007. SCE would like the opportunity to meet with the NRC Staff in September and discuss the evaluation and SCE's plans based on the results of the evaluation.

P.O. Box 128 San Clemente, CA 92672 949-368-7501 Fax 949-368-7575

Document Control Desk June 1, 2007 Should you have any questions please contact Ms. Linda T. Conklin at (949) 368-9443.

Sincerely, Enclosures cc: B. S. Mallett, Regional Administrator, NRC Region IV N. Kalyanam, NRC Project Manager, San Onofre Units 2, and 3 C. C. Osterholtz, NRC Senior Resident Inspector, San Onofre Units 2 and 3